数学试题讲解

定义数列

{a_{n}}, a_{1} = 1, e^{a_{n + 1}} a_{n} = e^{a_{n}} - 1

, 则下列说法正确的是

{a_{n}}

是单调递减数列 B.

a_{n + 1} > \frac{1}{2} a_{n}

a_{2 n + 1} + a_{2 n - 1} < 2 a_{2 n}

a_{n} \geq {(\frac{1}{2})}^{n - 1}